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Windows Analysis Report buIKlB688e.exe
Overview
General Information
Detection
Oski
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected Oski Stealer
Yara detected AntiVM3
Antivirus detection for URL or domain
Tries to steal Crypto Currency Wallets
Downloads files with wrong headers with respect to MIME Content-Type
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Performs DNS queries to domains with low reputation
.NET source code contains potential unpacker
Posts data to a JPG file (protocol mismatch)
Found many strings related to Crypto-Wallets (likely being stolen)
Tries to harvest and steal browser information (history, passwords, etc)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Antivirus or Machine Learning detection for unpacked file
Drops PE files to the application program directory (C:\ProgramData)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query locales information (e.g. system language)
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
PE file contains sections with non-standard names
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Yara detected Credential Stealer
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
HTTP GET or POST without a user agent
Contains functionality which may be used to detect a debugger (GetProcessHeap)
IP address seen in connection with other malware
Downloads executable code via HTTP
Contains long sleeps (>= 3 min)
Enables debug privileges
Creates a DirectInput object (often for capturing keystrokes)
Is looking for software installed on the system
Queries information about the installed CPU (vendor, model number etc)
Found inlined nop instructions (likely shell or obfuscated code)
Sample file is different than original file name gathered from version info
Extensive use of GetProcAddress (often used to hide API calls)
Drops PE files
Contains functionality to read the PEB
Uses taskkill to terminate processes
PE file contains more sections than normal
Uses Microsoft's Enhanced Cryptographic Provider
Creates a process in suspended mode (likely to inject code)
Classification
Process Tree |
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Malware Configuration |
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Threatname: Oski |
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{"C2 url": "chrisproperties.xyz", "RC4 Key": "056139954853430408"}
Yara Overview |
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Memory Dumps |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_Oski | Yara detected Oski Stealer | Joe Security | ||
JoeSecurity_AntiVM_3 | Yara detected AntiVM_3 | Joe Security | ||
JoeSecurity_AntiVM_3 | Yara detected AntiVM_3 | Joe Security | ||
JoeSecurity_Oski | Yara detected Oski Stealer | Joe Security | ||
JoeSecurity_AntiVM_3 | Yara detected AntiVM_3 | Joe Security | ||
Click to see the 1 entries |
Unpacked PEs |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_Oski | Yara detected Oski Stealer | Joe Security | ||
JoeSecurity_Oski | Yara detected Oski Stealer | Joe Security | ||
JoeSecurity_AntiVM_3 | Yara detected AntiVM_3 | Joe Security | ||
JoeSecurity_Oski | Yara detected Oski Stealer | Joe Security | ||
JoeSecurity_Oski | Yara detected Oski Stealer | Joe Security | ||
Click to see the 1 entries |
Sigma Overview |
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No Sigma rule has matched |
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Jbx Signature Overview |
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Click to jump to signature section
Show All Signature Results
AV Detection: |
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Found malware configuration | Show sources |
Source: | Malware Configuration Extractor: |
Multi AV Scanner detection for submitted file | Show sources |
Source: | ReversingLabs: |
Antivirus detection for URL or domain | Show sources |
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
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Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: |
Source: | Avira: |
Source: | Code function: | 5_2_0041CB10 | |
Source: | Code function: | 5_2_0041C900 | |
Source: | Code function: | 5_2_0041CBA0 | |
Source: | Code function: | 5_2_0041CD30 | |
Source: | Code function: | 5_2_0041EED0 |
Source: | Static PE information: |
Source: | Static PE information: |
Source: | Binary string: | ||
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Source: | Code function: | 5_2_004043DF | |
Source: | Code function: | 5_2_00420540 | |
Source: | Code function: | 5_2_0041E640 | |
Source: | Code function: | 5_2_0041D360 | |
Source: | Code function: | 5_2_0041F6B0 |
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior |
Source: | Code function: | 5_2_00423050 |
Networking: |
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Downloads files with wrong headers with respect to MIME Content-Type | Show sources |
Source: | Image file has PE prefix: |